XRD9827

更新时间： 2024-09-16 22:34:47

品牌	Logo	应用领域
艾科嘉 - EXAR		传感器
页数	文件大小	规格书
32页	266K
描述
12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control

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XRD9827 数据手册

XRD9827

12-Bit Linear CIS/CCD Sensor

Signal Processor with Serial Control

May 2000-3

FEATURES

APPLICATIONS

· 12-Bit Resolution, No Missing Codes

· One-channel 6MSPS Pixel Rate

· Triple-channel 2MSPS Pixel Rate

· 6-BitProgrammableGainAmplifier

· 8-Bit Programmable Offset Adjustment

· CIS or CCD Compatibility

· Color and Grayscale Flatbed Scanners

· Color and Grayscale Sheetfed Scanners

· MultifunctionPeripherals

· DigitalColorCopiers

· General Purpose CIS or CCD Imaging

· Low Cost Data Acquisition

· Internal Clamp for CIS or CCD AC Coupled

Configurations

· Simple and Direct Interface to Canon 600 DPI

Sensors

· 3.3V or 5V Operation & I/O Compatibility

· SerialLoadControlRegisters

· Low Power CMOS: 200mW-typ

· Low Cost 20-Lead Packages

· USBCompliant

GENERALDESCRIPTION

The XRD9827 is a complete linear CIS or CCD sensor

signal processor on a single monolithic chip. The

XRD9827includesahighspeed12-Bit resolutionADC,

a 6-Bit Programmable Gain Amplifier with gain adjust-

mentof1to10, and8-Bitprogrammableinputreferred

offset calibration range of 800mV.

AC coupled similar to the CCD configuration. This

enables CIS signals with large black levels to be

internallyclampedtoaDCreferenceequaltotheblack

level. The DC reference is internally subtracted from

the input signal.

The CIS configuration can also be used in other appli-

cations that do not require CDS function, such as low

cost data acquisition.

IntheCCDconfigurationtheinputsignalisACcoupled

with an external capacitor. An internal clamp sets the

black level. In the CIS configuration, the clamp switch

canbedisabledandtheCISoutputsignalisDCcoupled

from the CIS sensor to the XRD9827. The CIS signal

is level shifted to VRB in order to use the full range of

theADC. IntheCISconfigurationtheinputcanalsobe

ORDERINGINFORMATION

PackageType

TemperatureRange

0°Cto+70°C

PartNumber

XRD9827ACD

XRD9827ACU

20-LeadSOIC

20-LeadSSOP

Rev. 1.20

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...32

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